Laminated Oak lid

[dance]

Hi!

I have made a lid for a box out of four narrow oak boards laminated together. No breadboards and no battens on the underneath. But the boards are only 11mm thick. The glue is holding well - that isn't the problem...

The problem is that in the sun (the box is underneath a window), the lid is beginning to 'peeling' back on itself toward the window - as if the sun is drying out the lid and warping it.

The boards are alternated with regards grain direction and the whole thing is treated with one coat of linseed oil.

What can I do to counteract the effects of the sun? Can I dampen the lid on the top in the hope that it will fall back flat? Should I move the box?

Thanks

 

[gemma.windsor]

well moving the box seems like the most plausable option at the moment? Uness you have some other reason as to why you want it out in the sun?

 

[Chataigner]

Use breadboard ends next time, but even then, dont expect it to like full sun.

 

[dance]

well moving the box seems like the most plausable option at the moment? Uness you have some other reason as to why you want it out in the sun?

No that's fine - but do you think that alone will solve it? I've given the top a light coating of moisture.

 

[woodbloke]

The problem is that you're getting direct heat (and quite a lot) on one side only of the surface and the other side is relatively cool. The golden rule is 'do the same thing to each side' and in this case...you're not. More shrinkage is taking place on the 'sunny' side compared to the 'dark' side which is the reason why it's curling upwards towards the light. It's also exacerbated because the material is thin but this also makes it difficult to screw into from underneath were you to fit a thick bearer (say) to try and pull it back into line - Rob